Extended market hours data is available from 4:00 AM to 8 PM ET with the Pro plan and above. The data can be retrieved via API at the 1min, 5min, 15min, and 30min intervals. Alternatively, it can be streamed via WebSocket.

/time_series, /quote, /price, and /eod endpoints support pre-/post-market data while passing &prepost=true parameter.

Did this answer your question?